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Control System for Dual Fuel Engines

A dual-fuel engine and control system technology, applied in engine control, combustion engine, fuel injection control, etc., can solve problems such as inability to consider changes

Active Publication Date: 2018-11-16
ELECTRO-MOTIVE DIESEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, because such a control system uses only feed-forward control, it may not be able to account for changes in environmental factors and / or aging factors that can affect system performance

Method used

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  • Control System for Dual Fuel Engines
  • Control System for Dual Fuel Engines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] figure 1 An exemplary internal combustion engine 10 is illustrated. Engine 10 is shown and described as a two-stroke dual fuel engine. Engine 10 may include an engine block 12 at least partially defining a plurality of cylinders 16 (only one shown) each cylinder 16 having an associated cylinder head 20 . A cylinder liner 18 may be disposed within each engine cylinder 16 and a cylinder head 20 may enclose one end of the cylinder liner 18 . A piston 24 is slidably disposed within each cylinder liner 18 . Together, each cylinder liner 18 , cylinder head 20 , and piston 24 may define a combustion chamber 22 that receives fuel from a fuel system 14 mounted to engine 10 . It is contemplated that engine 10 may include any number of engine cylinders 16 with corresponding combustion chambers 22 .

[0012] Within the engine cylinder liner 18 , a piston 24 may be configured to reciprocate between a bottom dead center (BDC) or lowest position and a top dead center (TDC) or uppe...

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PUM

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Abstract

A control system for a dual-fuel engine is disclosed. The control system may have a gaseous fuel injector having a nozzle located at a first air intake port of a cylinder of the engine and configured to inject a variable amount of gaseous fuel radially into the cylinder based on at least one of a load and speed of the engine. The control system may also have a liquid fuel injector configured to inject a fixed amount of liquid fuel axially into the cylinder based on the at least one of the load and speed of the engine. The control system may additionally have a regulator configured to selectively adjust a flow of gaseous fuel to the gaseous fuel injector and at least one sensor configured to generate a signal indicative of a performance parameter of the engine. The control system may also have a controller in communication with the regulator and the at least one sensor. The controller may be configured to selectively cause the regulator to adjust the flow of gaseous fuel based on the signal.

Description

technical field [0001] The present invention relates to a control system, in particular it relates to a control system for a dual fuel engine. Background technique [0002] Due to the rising cost of liquid fuels such as diesel and tighter restrictions on exhaust emissions, engine manufacturers have developed dual-fuel engines. In an exemplary dual fuel engine, a low cost gaseous fuel such as natural gas is injected through the intake ports of the engine cylinders. Gaseous fuel is introduced with clean air from the intake port and ignited by injecting liquid fuel during each combustion cycle. Costs are reduced because liquid fuel is used with a lower-cost fuel. Additionally, the combustion of a mixture of gaseous and liquid fuels can reduce harmful emissions. [0003] In these dual-fuel engines, special attention must be paid to the pressure, flow rate, and timing of gas and liquid fuel injection into the cylinder. If these parameters are not strictly controlled, the engi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/00F02D41/30F02D19/06F02D19/08F02B25/04F02B75/02
CPCF02D19/0607F02D19/0626F02D19/0689F02D19/0692F02D19/081F02D19/10F02D35/027F02D41/0025F02D41/0027F02D2041/389F02D2400/04Y02T10/30F02D19/0642
Inventor S·B·菲弗兰德D·班德亚帕德耶E·J·克莱尔
Owner ELECTRO-MOTIVE DIESEL